'epicyclic' originates from Greek, specifically the word 'epikyklos,' where 'epi-' meant 'upon' and 'kyklos' meant 'circle.'

'epikyklos' transformed into the Latin word 'epicyclus,' and eventually became the modern English word 'epicyclic.'

Initially, it meant 'upon a circle,' but over time it evolved into its current meaning of 'relating to an epicycle.'